Precise welding machine for automobile seat framework

Abstract

The invention relates to the technical field of seat welding, in particular to an automobile seat framework precision welding machine which comprises a welding bin, a driving frame assembly and a partition curtain are arranged in the welding bin, and the partition curtain is arranged in the position, located in the middle of the driving frame assembly, of the welding bin and divides the welding bin into a welding area and a part feeding area. A welding robot is arranged in a welding area of the welding bin, a clamp tool is arranged on the driving frame assembly and comprises a bottom plate fixedly installed on the driving frame assembly, a clamp assembly and a supporting assembly, and the clamp assembly and the supporting assembly are arranged on the bottom plate. The precise welding machine solves the problems that the size of a clamp groove in a traditional precise welding machine for the automobile seat framework is fixed, so that the framework needs to be accurately aligned when being placed, the requirement for early-stage machining precision is extremely high, the framework is likely to be difficult to be placed into a clamp due to any slight deviation, the welding efficiency is reduced, and the production cost and the time cost are increased.

Description

Technical Field

[0001] The present invention relates to the technical field of seat welding, and more particularly to a precision welding machine for an automobile seat frame. Background Art

[0002] In the production process of automobile seats, the welding of seat frames is a crucial link. The quality of welding directly affects the overall strength and safety of the seat. In order to improve welding efficiency and ensure welding quality, precision welding machines are widely used in the welding of seat frames. These welding machines are usually equipped with special fixtures for positioning and fixing the seat frame so that the welding robot can perform welding operations accurately.

[0003] However, in existing automobile seat frame precision welding machines, the groove size of the fixture is often fixed. Although this design simplifies the structure and manufacturing process of the fixture to a certain extent, it brings some problems in actual application. First, since the shape and size of the seat frame may vary to a certain extent, especially in the early processing process, the size of the frame may have slight deviations due to factors such as material properties and processing technology.

[0004] When such a slightly deviated skeleton is placed in a fixed-size fixture groove, the operator must align the position and direction of the skeleton very precisely to ensure that it can be smoothly placed in the groove. This not only increases the difficulty and complexity of the operation, but also, if the operation is improper, may cause the skeleton to deform or be damaged, thereby affecting the welding quality and production efficiency.

[0005] In order to solve the above problems, a precision welding machine for an automobile seat frame is proposed. Summary of the Invention

[0006] (1) Technical problems solved

[0007] In response to the problems existing in the prior art, the present invention provides a precision welding machine for automobile seat frames to solve the problem mentioned in the background technology that the size of the fixture groove in the traditional automobile seat frame precision welding machine is fixed, which requires precise alignment of the frame when it is placed, and has extremely high requirements for the preliminary processing accuracy. Any slight deviation may make it difficult to place the frame into the fixture, thereby reducing welding efficiency and increasing production costs and time costs.

[0008] (2) Technical solution

[0009] To achieve the above objectives, the present invention provides the following technical solutions: a precision welding machine for an automobile seat frame, comprising a welding chamber, wherein a drive frame assembly and a partition curtain are provided inside the welding chamber, wherein the partition curtain is provided in the middle of the drive frame assembly, and separates the welding chamber into a welding area and a loading area, wherein a welding robot is provided in the welding area of ​​the welding chamber, and a fixture is provided on the drive frame assembly;

[0010] The fixture comprises a base plate fixedly mounted on the drive frame assembly, and a clamp assembly and a support assembly arranged on the base plate;

[0011] The support assembly includes a support base fixedly mounted on the base plate, and an integrally formed first side plate is provided on one side of the top of the support base. A mounting slot is provided on the support base, and a limiting member is rotatably mounted in the mounting slot at one end away from the first side plate. A driving member is also movably mounted in the mounting slot, and the driving member and the limiting member are engaged and matched.

[0012] A spring groove is provided at the bottom of the installation notch, and an elastic component is arranged in the spring groove.

[0013] The present invention is further configured such that through holes are provided on both sides of the inner wall of the mounting slot, and a shaft bolt is provided in the through hole, one end of the shaft bolt extends through the through hole to the outside of one side of the support base, and one end of the shaft bolt extends through the through hole to the outside of one side of the support base and is threadedly connected to a locking nut;

[0014] The limiting member includes a rotating block rotatably mounted on the rotating shaft bolt, and a limiting plate arranged at one end of the rotating block and perpendicular to the rotating block;

[0015] A rotating shaft groove is provided on the rotating block, and the rotating shaft groove and the rotating shaft bolt are rotationally matched. The rotating block is adapted to the installation slot, and the end of the rotating block away from the limiting plate is arranged in an arc surface. A plurality of tooth blocks are arranged in an array on the arc surface of the rotating block, and the tooth blocks are meshed and matched with the driving member.

[0016] The present invention is further configured such that the driving member includes a rack engaged with the gear block, and a receiving plate provided at the top end of the rack;

[0017] The rack is movably plugged into the mounting slot, and when the rack is engaged with the tooth block, the side of the rack away from the engagement is in contact with the inner wall of one side of the mounting slot.

[0018] The present invention is further configured such that a guide column is provided at the lower end of the rack, and the guide column and the spring slot are movably matched.

[0019] The present invention is further configured such that the elastic component includes a spring disposed in the spring slot, and a spring compensating member disposed in the spring slot;

[0020] The top end of the spring contacts the bottom end of the guide column, and one end of the spring away from the guide column is spirally sleeved on the outside of the spring compensation component.

[0021] The present invention is further configured such that an adjustment cavity and an installation cavity are provided on the support seat below the installation notch, and a partition is provided between the adjustment cavity and the installation cavity;

[0022] The regulating cavity is connected to the mounting notch through the spring groove, a concentric hole is provided on the partition plate, and the regulating cavity and the mounting cavity are connected through the concentric hole;

[0023] The spring compensating member is coaxially arranged with the spring slot and the concentric hole, and the inner diameter of the concentric hole is smaller than the inner diameter of the spring slot.

[0024] The present invention is further configured such that the spring compensating member includes a column disposed at the lower end of the spring slot and located in the adjustment cavity, and further includes a locking bolt disposed at the lower end of the column, and a spiral groove formed on a circumferential side wall of the column;

[0025] The column and the spring groove are movably matched and plugged, and the spring is spirally sleeved on the spiral groove on the column.

[0026] The present invention is further configured such that a thread groove is formed at the bottom end of the column, and the thread groove matches the thread of the locking bolt;

[0027] A cross slot is provided on the top of the column.

[0028] The present invention is further configured such that the clamp assembly includes a support frame arranged on the base plate, a clamp arranged on the support frame, and a cylinder for pushing the clamp to clamp.

[0029] The present invention is further configured such that the drive frame assembly includes a drive motor arranged in the welding bin, a main frame arranged on the drive motor, an adjustment motor arranged on the main frame, and a tooling frame arranged on the output shaft of the adjustment motor.

[0030] (3) Beneficial effects

[0031] Compared with the prior art, the present invention provides a precision welding machine for automobile seat frames, which has the following beneficial effects:

[0032] 1. The support assembly in the present invention can adaptively limit the steel pipe through the rotating limit piece, and can automatically adapt to skeleton steel pipes of different sizes or with slight deviations, and can achieve stable clamping without manual precise alignment. This not only significantly reduces the operator's alignment time and labor intensity, but also improves the accuracy and efficiency of skeleton placement, ensuring the smooth progress of the welding process.

[0033] 2. The present invention sleeves the spring onto the spiral groove on the column, so that the downward movement of the guide column only compresses the spring that is not sleeved on the column, that is, only the elasticity of this part of the spring is reduced, without affecting the elasticity of the spring sleeved on the column. Then, the spring is moved upward by spiral upward movement, thereby supplementing the spring elasticity, so that it can have a suitable upward thrust on the guide column, thereby ensuring the maximum angular expansion of the limit plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the overall structure of the automobile seat frame precision welding machine.

[0035] Figure 2 This is a schematic diagram of the structure inside the welding chamber.

[0036] Figure 3 Schematic diagram of the fixture structure.

[0037] Figure 4 Schematic diagram of the exploded structure of the support component.

[0038] Figure 5 Schematic diagram of the exploded structure of the elastic component.

[0039] Figure 6 Schematic diagram of the cross-sectional structure of the support component.

[0040] Figure 7 This is a structural diagram of the spring compensator during installation.

[0041] Figure: 1, welding chamber; 2, drive frame assembly; 201, drive motor; 202, main frame; 203, adjustment motor; 204, tooling frame; 3, partition curtain; 4, welding robot; 5, fixture; 501, bottom plate; 6, clamp assembly; 601, support frame; 602, clamp; 603, cylinder; 7, support assembly; 701, support seat; 702, first side plate; 703, mounting notch; 704, spring slot; 705, through hole; 706, adjustment cavity; 707, mounting Cavity; 708, partition; 709, concentric hole; 8, limiter; 801, shaft bolt; 802, locking nut; 803, rotating block; 804, limiter plate; 805, shaft groove; 806, gear block; 9, driving member; 901, rack; 902, receiving plate; 903, guide column; 10, elastic component; 1001, spring; 11, spring compensation member; 1101, column; 1102, locking bolt; 1103, spiral groove; 1104, threaded groove; 1105, cross groove. DETAILED DESCRIPTION

[0042] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0044] In the present invention, unless otherwise specified, directions such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0045] For examples, see Figure 1 - Figure 7 A precision welding machine for an automobile seat frame includes a welding chamber 1, wherein a driving frame assembly 2 and a partition curtain 3 are provided inside the welding chamber 1. The partition curtain 3 is provided in the middle of the driving frame assembly 2 of the welding chamber 1 to separate the welding chamber 1 into a welding area and a loading area. A welding robot 4 is provided in the welding area of ​​the welding chamber 1, and a fixture 5 is provided on the driving frame assembly 2.

[0046] The fixture 5 includes a base plate 501 fixedly mounted on the drive frame assembly 2, and a clamp assembly 6 and a support assembly 7 arranged on the base plate 501;

[0047] The support assembly 7 includes a support base 701 fixedly mounted on the base plate 501, and an integrally formed first side plate 702 is provided on one side of the top of the support base 701. A mounting slot 703 is formed on the support base 701, and a limit member 8 is rotatably mounted in the mounting slot 703 at an end away from the first side plate 702. A driving member 9 is also movably mounted in the mounting slot 703, and the driving member 9 is engaged with the limit member 8.

[0048] A spring slot 704 is defined at the bottom of the mounting slot 703 , and the elastic component 10 is disposed in the spring slot 704 .

[0049] The support assembly 7 and the clamp assembly 6 are designed and placed according to the GDT drawing of the fixture. The support assembly 7 is used to place the skeleton, and the clamp assembly 6 is used to clamp and fix the placed skeleton, thereby facilitating welding by the welding robot 4.

[0050] Specifically, in the initial state of the support assembly 7 designed according to the GDT drawing, the elastic assembly 10 pushes the driving member 9 to move upward. When the driving member 9 moves upward, the engaging limit member 8 rotates and expands, thereby increasing the distance between the top of the first side plate 702 and the top of the limit member 8. As a result, the seat frame steel pipe workpiece can be easily placed on the support assembly 7, that is, between the first side plate 702 and the limit member 8. After the frame is placed on the support assembly 7, the driving member 9 is driven downward by its own gravity, thereby driving the limit member 8 to the first side plate 702. The plate 702 rotates in the direction so that the distance between the first side plate 702 and the top of the limiting member 8 becomes smaller, until the limiting member 8 fits against the side wall of the skeleton and cannot rotate, thereby realizing adaptive skeleton limitation. After the skeleton is adaptively limited at the top of the support component 7, the clamping component 6 presses the skeleton, so that the skeleton pushes the driving member 9 to have a downward trend, thereby driving the limiting member 8 to have a force to rotate and clamp the skeleton, thereby making the skeleton fixed on the support component 7, thereby realizing the clamping and fixation of the workpiece, which is convenient for the fixed-point welding of the welding robot 4.

[0051] Furthermore, there are four sets of fixtures 5. On the drive frame assembly 2, two sets of fixtures 5 are set on both sides with the partition curtain 3 as the center line. When the two sets of fixtures 5 on one side of the drive frame assembly 2 are located in the loading area, the two sets of fixtures 5 on the other side are located in the welding area. The welding robot 4 performs welding operations on the workpieces on the fixtures 5, and the welding smoke and welding light are isolated by the partition curtain 3, preventing the operator from being injured. Through holes 705 are provided on both sides of the inner wall of the installation slot 703, and a shaft bolt 801 is provided in the through hole 705. One end of the shaft bolt 801 extends through the through hole 705 to the outside of one side of the support seat 701, and the other end of the shaft bolt 801 extends through the through hole 705 to the outside of one side of the support seat 701 and is threadedly connected to a locking nut 802.

[0052] The limiting member 8 includes a rotating block 803 rotatably mounted on the rotating shaft bolt 801, and a limiting plate 804 disposed at one end of the rotating block 803 and perpendicular to the rotating block 803;

[0053] A rotating shaft groove 805 is provided on the rotating block 803, and the rotating shaft groove 805 and the rotating shaft bolt 801 are rotationally matched. The rotating block 803 is adapted to the installation slot 703, and the end of the rotating block 803 away from the limiting plate 804 is set in an arc surface. A plurality of tooth blocks 806 are arranged in an array on the arc surface of the rotating block 803, and the tooth block 806 is engaged and matched with the driving member 9.

[0054] The width of the rotating block 803 is adapted to the size of the mounting slot 703, so that the limit member 8 will not move or deviate when rotating. Specifically, when installing the limit member 8, the rotating block 803 is first inserted into the mounting slot 703, so that the through hole 705 on the mounting slot 703 and the axis of the rotating shaft slot 805 on the rotating block 803 correspond to each other, wherein the aperture of the rotating shaft slot 805 and the through hole 705 are the same, and the rotating shaft bolt 801 is inserted into the through hole 705 from one side of the support seat 701, and then passes through the rotating shaft slot 805 on the rotating block 803, and then passes through the through hole 705 on the other side of the support seat 701, and is threadedly locked with the locking nut 802, wherein the part of the rotating shaft bolt 801 that passes through the mounting slot 703 is a smooth end, and the part of the rotating shaft bolt 801 that passes through the through hole 705 and extends to the outside of one side of the support seat 701 is provided with a thread that matches the locking nut 802.

[0055] In the initial state, under the action of the elastic component 10, the driving member 9 is pushed upward, so that the meshing tooth block 806 drives the rotating block 803 to rotate, thereby making the upper end of the limit plate 804 move away from the first side plate 702. Therefore, when the seat frame steel pipe is placed in the gap between the first side plate 702 at the upper end of the support seat 701 and the limit plate 804, the limit plate 804 is tilted, so that the distance between the upper end and the first side plate 702 is maximized, so that the seat frame steel pipe can be easily inserted, and then the limit plate 804 is driven to rotate inward by the downward pressure of the clamp component 6, thereby limiting and fixing the seat frame steel pipe. If it is placed on a support component 7 with a fixed size, manual adjustment and alignment are required, and the seat frame steel pipe undergoes uncontrollable deformation when bending and needs to be pressed to clamp it in the limit groove, which makes the placement of the workpiece more difficult, thereby affecting work efficiency.

[0056] The driving member 9 includes a rack 901 meshing with the gear block 806 and a receiving plate 902 disposed on the top of the rack 901;

[0057] The rack 901 and the mounting slot 703 are movably plugged in, and when the rack 901 and the tooth block 806 are engaged, the side of the rack 901 away from the engagement is in contact with the inner wall of one side of the mounting slot 703 .

[0058] The width of rack 901 matches the size of mounting slot 703, allowing it to move up and down within mounting slot 703. The side of rack 901 away from engagement abuts the inner wall of mounting slot 703, making the up and down movement of rack 901 more stable. In the initial state, under the push of elastic component 10, the top of rack 901 protrudes from the top of support seat 701, thereby creating a certain distance between receiving plate 902 and the top of support seat 701. Receiver plate 902 is larger than mounting slot 703, allowing the seat frame steel pipe to be placed on receiving plate 902. This allows the rotation block 803 equipped with tooth block 806 to drive the limit plate 804 to rotate and adaptively limit the seat frame steel pipe. A guide post 903 is provided at the lower end of rack 901, and the guide post 903 and spring slot 704 are movably matched.

[0059] By the movable matching of the guide column 903 and the spring groove 704, and the matching of the three side walls of the rack 901 with the three inner walls of the mounting groove 703, and the meshing of the rack 901 and the tooth block 806, the rack 901 can only move straight up and down. If the guide column 903 is not set, only the three side walls of the rack 901 and the meshing limit of the rack 901 and the tooth block 806, that is, the limit around the rack 901, the rack 901 can move straight up and down steadily, but it is not ruled out that the rack 901 will tilt and rotate toward the limit plate 804 when moving up and down. Therefore, the setting of the guide column 903 effectively guarantees the up and down movement of the rack 901, thereby improving the meshing accuracy between the rack 901 and the tooth block 806.

[0060] The elastic assembly 10 includes a spring 1001 disposed in the spring slot 704 , and a spring compensating member 11 disposed in the spring slot 704 ;

[0061] The top of the spring 1001 contacts the bottom of the guide post 903 , and one end of the spring 1001 away from the guide post 903 is spirally sleeved on the outside of the spring compensating member 11 .

[0062] One end of the spring compensator 11 is arranged inside the spring slot 704, so that the expansion and contraction area of ​​the spring 1001 is located in the spring slot 704. The spring 1001 pushes the guide column 903 upward, so that the rack 901 engages the tooth block 806 to drive the rotating block 803 to rotate, so that when the limit plate 804 expands outward to the maximum angle, the guide column 903 is still located in the spring slot 704.

[0063] An adjustment cavity 706 and an installation cavity 707 are provided on the support base 701 below the installation notch 703 , and a partition 708 is provided between the adjustment cavity 706 and the installation cavity 707 ;

[0064] The regulating cavity 706 is connected to the mounting notch 703 through the spring groove 704. A concentric hole 709 is formed on the partition 708, and the regulating cavity 706 and the mounting cavity 707 are connected through the concentric hole 709.

[0065] The spring compensating member 11 is coaxially arranged with the spring slot 704 and the concentric hole 709 , and the inner diameter of the concentric hole 709 is smaller than the inner diameter of the spring slot 704 .

[0066] The spring compensator 11 includes a column 1101 disposed at the lower end of the spring slot 704 and located in the adjustment cavity 706, a locking bolt 1102 disposed at the lower end of the column 1101, and a spiral groove 1103 formed on the circumferential side wall of the column 1101.

[0067] The column 1101 and the spring groove 704 are movably matched and plugged, and the spring 1001 is spirally sleeved on the spiral groove 1103 on the column 1101.

[0068] A thread groove 1104 is formed at the bottom end of the column 1101, and the thread groove 1104 and the locking bolt 1102 are thread-matched;

[0069] A cross slot 1105 is formed at the top of the column 1101 .

[0070] The assembly method of the support assembly 7 is as follows: first, the spring 1001 is sleeved into the spiral groove 1103 on the column 1101. In the initial state, the spiral length of the spring 1001 is greater than the length of the spiral groove 1103 on the column 1101. Therefore, when the spring 1001 is spirally adapted to the spiral groove 1103 on the column 1101, a section of the spring 1001 will remain. This section of the spring 1001 is used to lift the rack 901, so that the limit plate 804 expands to the maximum angle. The column 1101 with the spring 1001 sleeved is inserted from the upper end of the spring groove 704, so that the column The bottom end of 1101 contacts the top end of the partition 708 and cannot move down any further. At this time, the upper end of the column 1101 is located at the lower end inside the spring slot 704, and the remaining spring 1001 is located at the middle end of the spring slot 704, which is used to contact the support guide column 903. Then the locking bolt 1102 is passed through the concentric hole 709 and connected with the threaded groove 1104 of the column 1101, thereby locking the position of the column 1101. When tightening the locking bolt 1102, a cross screwdriver and the cross slot 1105 need to be matched to limit the column 1101 and prevent rotation.

[0071] Furthermore, the guide column 903 is inserted into the spring groove 704 so that the rack 901 is close to the side wall of the first side plate 702 and fits the inner wall of the installation groove 703. Then, the limit plate 804 of the limit member 8 is kept in a vertical state, and the receiving plate 902 is pressed down to fit the top of the support seat 701. Then, the rotating block 803 is inserted into the installation groove 703, and the tooth block 806 and the rack 901 are engaged. Then, the shaft bolt 801 is passed through the limit member 8 for installation. After installing the limit member 8, the receiving plate 902 is loosened, and the elastic force of the spring 1001 pushes the rack 901 upward, thereby causing the limit plate 804 to rotate and unfold.

[0072] Preferably, since the fixture 5 is frequently used during welding, the spring 1001 will be frequently squeezed when the support assembly 7 is adaptively limited, resulting in a weaker rebound force of the spring 1001. As a result, the expansion opening of the limit plate 804 will become smaller and smaller after the elastic force of the spring 1001 weakens. At this time, by rotating the spring 1001, the spring 1001 will spiral upward in the spiral groove 1103, thereby elastically compensating the spring 1001 in the spring groove 704 for supporting the lifting guide column 903.

[0073] It should be noted that when the limit plate 804 rotates to the maximum angle under the meshing drive of the rack 901 and the tooth block 806, it is limited by the interference between the lower end of the limit plate 804 and the side wall of the support seat 701. At the same time, when the limit plate 804 expands to the maximum angle, the rack 901 and the tooth block 806 are still in the meshing state and are not separated.

[0074] Furthermore, when the spring 1001 threadedly connected to the column 1101 is located at the lower end of the spring groove 704, the spring 1001 is limited by the inner wall of the spring groove 704, so when the guide column 903 moves downward to squeeze the spring 1001, it will not cause the spring 1001 to deform and move downward together.

[0075] The clamp assembly 6 includes a support frame 601 provided on the base plate 501 , a clamp 602 provided on the support frame 601 , and a cylinder 603 for pushing the clamp 602 to clamp.

[0076] The driving frame assembly 2 includes a driving motor 201 arranged in the welding chamber 1, a main frame 202 arranged on the driving motor 201, an adjusting motor 203 arranged on the main frame 202, and a tooling frame 204 arranged on the output shaft of the adjusting motor 203.

[0077] The cylinder 603 starts to push the clamp 602 to rotate and press it against the seat frame steel pipe workpiece, thereby fixing the seat frame steel pipe workpiece. The rotation of the drive motor 201 drives the main frame 202 to rotate 180 degrees, so that the fixture 5 on the tooling frame 204 on both sides of the main frame 202 can be switched between the welding area and the loading area. At the same time, the adjustment motor 203 on the main frame 202 drives the tooling frame 204 to rotate, so that the fixture 5 on the tooling frame 204 can adjust the angle, thereby cooperating with the welding robot 4 for welding.

[0078] In all the schemes mentioned above, the connection between the two parts can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by those skilled in the art that various changes, modifications, substitutions and deformations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision welding machine for automobile seat frames, characterized by: The invention comprises a welding chamber (1), wherein a driving frame assembly (2) and a partition curtain (3) are provided inside the welding chamber (1), wherein the partition curtain (3) is provided in the middle of the driving frame assembly (2) of the welding chamber (1) to separate the welding chamber (1) into a welding area and a loading area, and a welding robot (4) is provided in the welding area of ​​the welding chamber (1), and a fixture (5) is provided on the driving frame assembly (2); The fixture (5) comprises a base plate (501) fixedly mounted on the drive frame assembly (2), and a clamp assembly (6) and a support assembly (7) arranged on the base plate (501); The support assembly (7) includes a support seat (701) fixedly mounted on the base plate (501), and a first side plate (702) formed integrally is provided on one side of the top end of the support seat (701), a mounting slot (703) is provided on the support seat (701), and a limiting member (8) is rotatably mounted in the mounting slot (703) at one end away from the first side plate (702), and a driving member (9) is also movably mounted in the mounting slot (703), and the driving member (9) and the limiting member (8) are meshed and matched; A spring groove (704) is provided at the bottom of the installation notch (703), and an elastic component (10) is provided in the spring groove (704).

2. The automobile seat frame precision welding machine according to claim 1, characterized in that: Through holes (705) are provided on both sides of the inner wall of the mounting slot (703), and a rotating shaft bolt (801) is provided in the through hole (705), one end of the rotating shaft bolt (801) passes through the through hole (705) and extends to the outside of one side of the support seat (701), and one end of the rotating shaft bolt (801) that passes through the through hole (705) and extends to the outside of one side of the support seat (701) is threadedly connected with a locking nut (802); The limiting member (8) comprises a rotating block (803) rotatably mounted on the rotating shaft bolt (801), and a limiting plate (804) arranged at one end of the rotating block (803) and arranged perpendicular to the rotating block (803); A rotating shaft groove (805) is provided on the rotating block (803), and the rotating shaft groove (805) and the rotating shaft bolt (801) are rotationally matched. The rotating block (803) is adapted to the mounting notch (703), and one end of the rotating block (803) away from the limiting plate (804) is arranged in an arc surface. A plurality of tooth blocks (806) are arranged in an array on the arc surface of the rotating block (803), and the tooth blocks (806) and the driving member (9) are meshed and matched.

3. The automobile seat frame precision welding machine according to claim 2, characterized in that: The driving member (9) includes a rack (901) meshing with the tooth block (806), and a receiving plate (902) arranged at the top end of the rack (901); The rack (901) and the mounting notch (703) are movably plugged in, and when the rack (901) and the tooth block (806) are engaged, the side of the rack (901) away from the engagement abuts against the inner wall of one side of the mounting notch (703).

4. The automobile seat frame precision welding machine according to claim 3, characterized in that: A guide post (903) is provided at the lower end of the rack (901), and the guide post (903) and the spring slot (704) are movably matched.

5. The automobile seat frame precision welding machine according to claim 1, characterized in that: The elastic component (10) includes a spring (1001) disposed in the spring slot (704), and a spring compensating member (11) disposed in the spring slot (704); The top end of the spring (1001) contacts the bottom end of the guide post (903), and one end of the spring (1001) away from the guide post (903) is spirally sleeved on the outside of the spring compensation member (11).

6. The automobile seat frame precision welding machine according to claim 5, characterized in that: An adjusting cavity (706) and an installation cavity (707) are provided on the support seat (701) below the installation notch (703), and a partition (708) is provided between the adjusting cavity (706) and the installation cavity (707); The regulating chamber (706) is connected to the mounting notch (703) via the spring slot (704); a concentric hole (709) is provided on the partition (708); and the regulating chamber (706) and the mounting chamber (707) are connected via the concentric hole (709); The spring compensating member (11) is coaxially arranged with the spring slot (704) and the concentric hole (709), and the inner diameter of the concentric hole (709) is smaller than the inner diameter of the spring slot (704).

7. The automobile seat frame precision welding machine according to claim 6, characterized in that: The spring compensating member (11) includes a column (1101) disposed at the lower end of the spring slot (704) and located in the adjustment cavity (706), a locking bolt (1102) disposed at the lower end of the column (1101), and a spiral groove (1103) formed on the circumferential side wall of the column (1101); The column (1101) and the spring groove (704) are movably matched and plugged, and the spring (1001) is spirally sleeved on the spiral groove (1103) on the column (1101).

8. The automobile seat frame precision welding machine according to claim 7, characterized in that: A thread groove (1104) is provided at the bottom end of the column (1101), and the thread groove (1104) and the locking bolt (1102) are thread-matched; A cross slot (1105) is provided at the top of the column (1101).

9. The automobile seat frame precision welding machine according to claim 8, characterized in that: The clamp assembly (6) comprises a support frame (601) arranged on the base plate (501), a clamp (602) arranged on the support frame (601), and a cylinder (603) for pushing the clamp (602) to clamp.

10. The automobile seat frame precision welding machine according to claim 9, characterized in that: The driving frame assembly (2) includes a driving motor (201) disposed in the welding chamber (1), a main frame (202) disposed on the driving motor (201), an adjusting motor (203) disposed on the main frame (202), and a tooling frame (204) disposed on an output shaft of the adjusting motor (203).

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